Henry belfield



UNITED sTATEs PATENT oEEicE.

HENRY BELFIELD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 HIMSELF ANDSAMUEL W. HOFFMAN, OF SAME PLACE.

PUMP.

Specification o f Letters Patent No. 27,945, dated April 17, 1860.

To all whom 'it may concern:

4Be it known that I, HENRY BELEIELD, of the city and county ofPhiladelphia, State of Pennsylvania, have invented a new and usefulImprovement in Pumps; and I do hereby declare the following to be afull, clear, and eXact description of the same, reference being had tothe accompanying drawing and to the letters of reference marked thereon.

My invention relates to an improvement in the pump for which letterspatent were granted to WV. H. Harrison on the 23d day of June 1857, saidpump having two buckets reciprocating in contrary directions, and myimprovement consists in the employment of a shaft with two cranks oneconnected by a rod to one bucket and the other by a similar rod toanother bucket and the whole being constructed and arranged as set forthhereafter so that the desired motion may be imparted to the buckets by arotating motion of the shaft instead of by vibrating levers, therebyrendering the pump more easy to operate by hand and better adapted forbeing driven directly from any adjacent shaft, or, from a steam engineor other prime mover, at the same time affording a direct passage forthe flow of water through the pump and a regular and uniform dischargeof water from the same.

In order to enable others skilled in the art to make and use myinvention, I will now proceed to describe its construction andoperation.

On reference to the accompanying drawing which forms a part of thisspecification, Figure l, is a vertical section of my improved pump. Fig.2, a transverse vertical section, and Fig. 3, a ground plan. j

Similar letters refer to similar parts throughout the several views.

A and A are the two barrels of the pump secured, the former to the upperend and the latter to the lower end of the casing B with which bothbarrels communicate. To each side of this casing is secured a tightlyfitting cover C each cover being furnished with a stuffing box c.

The opposite ends of the double cranked shaft D pass through and turn inthe opposite' covers C and their stufling box, one end of this crankshaft being furnished with a handle E or other suitable drivingapparatus.

The crank shaft D has two cranks Z and cZ, the former being connected toone end of the rod G, the opposite end of which is jointed to the headof a bolt H which is secured to the bucket I. This bucket fits snugly,lbut so as to reciprocate freely in the barrel A, is provided withgrooves a a for receiving suitable packing, and is furnished withbutterfly valves c c, opening outward, the said valves being composed ofone piece of leather or other suitable material secured to the top ofthe piston or bucket I by the bolt H. The crank d is connected to oneend of the rod Gr the opposite end of which is jointed to a bolt I-I,secured to the bucket I' which is adapted to the barrel, this bucketbeing also furnished with butteriy valves opening outward, andconstructed in the same manner as the valves of the bucket- I. Onturning the shaft D a simultaneous reciprocating motion will be impartedto the two buckets I and I which move in their respective barrelsinvariably in a contrary direction to each other. As the bucket I risesthe water will rush into the barrel A', at the same time a portion ofthe water within the chamber of the casing B is forced by this bucketthrough the descending bucket- I (the valves of which will be open) intothe barrel A above the bucket. Then the bucket I descends its valveswill be opened and the water which had previously found its way into thebarrel A by the rising of the same bucket will pass through the latterinto the chamber of the casing B, at the same time, the water which hadpassed through the bucket I during its downward movement and into thebarrel A is forced from this barrel by the upward movement of the bucketand its closed valves.

It will now be seen without further description that by turning theshaft D a constant stream of water may be forced through any pipe orpipes communicating with the barrel A.

I am aware that pumps having two valved buckets moving in contrarydirections have been heretofore known and used and also that two suchbuckets have been operated by devices situated in a chamber between andcommunicating with the two barrels of a pump, as in the patent grantedto W. I-I. Harrison June 23, 1857. In all such cases however theoperating of the buckets has been effected through the medium ofvibrating bars and not by means of rotating cranks which not only afforda more easy and agreeable mode of moving the buckets by hand, butpresent facilities for driving directly from any adjacent rotating shaftor directly from a steam engine or other prime mover. Moreover, themotion imparted to the buckets by a revolving crank arrangement is moreuniform than that obtained by vibrating levers, and consequently insuresa greater uniformity in the discharge of the water.

Another advantage of this rotating double crank is the opportunity whichit affords of arranging the barrels or cylinders in a line with eachother, thus presenting a direct passage for the flow of water throughthe pump and avoiding the tortuous passages which are the mostobjectionable features in ordinary double acting pumps.

Without claiming broadly, therefore, the use of two buckets moving incontrary directions, or the operating of the same by devices situatedbetween the two buckets: I claim as my invention and desire to secure byLetters Patent as an improvement in the aforesaid patent of W. H.Harrison:

The shaft D, its two cranks d and d in combination with the rods G and Gand valved buckets I and I and their barrels A and A the whole of theparts being constructed and arranged as set forth so that a simultaneousreciprocating motion in contrary directions may be imparted to the saidbuckets by the rotation of the said shaft D, and so that the two barrelsmay be in a direct line with each other.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

HENRY BELFIELD.

Witnesses:

HENRY HowsoN, CHARLES D. FREEMAN.

